Thermometer.



S. NEAL.

THERMOMETER.

APPLIGATIQN FILED 51m22.490s.

memed 001.. 1908.r

2 SHEETSWSHEE 'i 1.

@www #wf @j S. NEAL. THERMOMETER. APPLfJATIoN rIVLBD nia, 1909.

Patented oct.6,19 os 2 amar-snm 2.

unal-mn.

Wmme@ (WDW unirsi) ysrA'rps narrar onirica,

STEPHENS NEAL, OF CORDELE, GEORGIA, ASSIGNOR TO THE NEAL NAVAL STORES GOMPAN OF CORDELE, GEORGIA, A CORPORATION OF GEORGIA.

Specification of Letters Patent'.

Patented onf. e isos.

Application lefl .Tanuf-.z'y 22, 1908. Serial No. 412,212.

To all whom it may concern:

Ile it known that I, S'rnriinNs NEAL, a citizen of the United States, residing at Cordele, in the county of Crisp and State oi Georgia, have invented certain new and useful Improvements in Thermometers; and I 'do hereby declare the following to be a full,

f primarily designed for use with a turpentii'ie still.

lVith this object in View, my invention consists in the construction and combinations of parts as hereinafter described and claimed. V

In the accompanying drawings-Figure l is a view of the iace plate of a thermometer, embodying my invention, and Fig. 2 is a cross section of a part of a still. show ing my inventionapplied thereto.

In the practical use of thermometers with turpentine stills it is important that the bulb of the thermometer should be within the material which is undergoing distillation; that it should be where it can readily be ob-A served by the operator, while he is tiring the still, and one that may be readily removed and inserted into the still. All these results are obtained by my construction.

a represents the face plate of a thermometer provided with an index b, and c represents the thermometer tube. The indexis graduated on the Fahrenheit scale and marked of in divisions of 10, subdivisions, of course, being-.provided In addition to this the faceplate bears the legend Spirits 212 indicating the Lpoint at which the `lighter part of the turpentine begins'to dis-l til; the legend Water, with arrows running from this legend to the figures 250 and 275, indicating the limits between which water is to be added to the still; Fluidity 306 indicating the point at Which oleo`- resinous material becomes perfectly fluid, and Limit 316 indicating the point where the material begins to cha r and gas begins to be giveiioff, above which point the tempera ture should not be allowed .to rise.

Referring to Fig. 2Zd represents a part of the still Wall, and e the masonry surrounding the same. This wall is perforated for the passage therethrough of a protecting tube f, screw threaded, as shown at g, and held in place by the nuts it and i. Asbestos washers may, if preferred, be used with either or both of' said nuts, though this is not strictly necessary. The nut i may be made integral with the tubo f, if preferred. This tube terminates in a perforated boss j and a perforated nipple k, and the tube is prefer ably made of copper so that it will not be at tacked by the material under treatment. The nipple 7a is made comparatively' thin, so that the heat will be readily conducted through it, and the boss y' is shouldered,as shown at m.

The tube c of the thermometer is bent at right angles and the larger part of its horizontal'portion is protected by a tube a, the inner part of which is shouldered to Contact with the shoulder of the boss y'. This tube is perforated throughout and the exposed bulb of the thermometeris adapted to slide withy in the nipple 7c. A sleeve 0, screw threaded at p, is adapted to screwinto the outer end of the tube f.

Thus it will be seen that I have provided a simple thermometer which can be used in any desired position, and which is thoroughly protected and which can be readily removed, if desired. This thermometer also shows on its face legends which serve to guide .the

workmen in operating' the still.

Having thus described my invention, I claiml. The combination of a still, a tube passing through the wall of said still and having A'ze y its outer end interiorly sciew-threa.ded, and

having its inner end extending within said still and provided with a shoulder, and ter-v minating in a'hollow, thin walled nipple, a thermometer, part of which passes inside of said tube, with its bulb in contact with said nipple, a protecting tube for said thermometer, having a reduced. portion adapted to fitu into the hollow shoulder of said first named tube, and a sleeve for removably securing said protecting tube within said rst named tube, substantially as described; y

2. The combination of a still., a tube manently secured in the wall of said sti-il, said tube having its outer end interiorly' screw-threaded, and provided on the part in`- side the still wh a hollow projection having an interior shoulder and ternainati.rigA inf,'a lo thin walled nipple, a'thermometer bent at right anglesand having its horizontal part aditefd to pass inside of said tube With the bu o nipple, a'face 'plate for said thermometer, a

protecting tube fitting Within said rst I named tube and having a reduced portion adapted to it Within the hollow shoulder of the first named tube, 10 screw into said first and a sleeve adapted to named tube, holding the the thermometer in Contact with Sayid thermometer and protecting Stantinlly as described.

ture, 1n presence of two witnesses.

STEPHENS NEAL.

"Witneeees v C. M. KILLIAN, i T, A. BAKER.

tube romoif'ubly 1n position Within Suid first named tube, Subln testimony whereof, l nilx my Signat 

